There are approximately 110 livery companies of the City of London. Most date back to the middle ages and represent an ancient craft, trade association or guild, such as Ironmongers, but there are also modern ones, such as Information Technologists, Cooks and Management Consultants. London’s Livery Companies play an important part in City life, not only providing charitable support and maintaining their crafts, but also as part of the governance of the City of London. Liverymen retain voting rights for the senior civic offices, such as the Lord Mayor, Sheriffs, and City Of London Corporation. For further information visit:
https://www.cityoflondon.gov.uk/about-the-city/history/Pages/livery-companies.aspx
http://www.liverycompanies.info/
https://en.wikipedia.org/wiki/Livery_company